UUID stands for Universally Unique Identifier. It is a 128-bit label used for information in computer systems.

What is the difference between v1 and v4?

Version 1 is generated from a MAC address and the current time, whereas Version 4 is generated from completely random numbers.

Are these UUIDs generated securely?

Yes, v4 UUIDs are generated using cryptographic random number generators natively in your browser.

Tools

Generate universally unique identifiers (UUIDs) across versions 1 and 4.

UUID Version

Quantity (1 - 100)

Uppercase output (e.g., A1B2...)Strip hyphens

Mongo ObjectId

Generate ObjectIds and decode creation timestamps natively

Bcrypt Generator

Hash passwords and verify against bcrypt strings securely

JSON to SQL

Convert JSON arrays directly into SQL INSERT statements

CSV to SQL

Convert CSV data rows into formatted SQL inserts instantly

YAML to JSON

Two-way live format converter between YAML and JSON

JSON to Excel

Convert JSON arrays to Excel files